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comparison src/share/vm/memory/metaspaceCounters.cpp @ 10183:868d87ed63c8

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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions Reviewed-by: mgerdin, coleenp
author jmasa
date Tue, 12 Feb 2013 14:15:45 -0800
parents 0624b9d81255
children 1a8fb39bdbc4
comparison
equal deleted inserted replaced
10182:5c93c1f61226 10183:868d87ed63c8
27 #include "memory/resourceArea.hpp" 27 #include "memory/resourceArea.hpp"
28 #include "utilities/exceptions.hpp" 28 #include "utilities/exceptions.hpp"
29 29
30 MetaspaceCounters* MetaspaceCounters::_metaspace_counters = NULL; 30 MetaspaceCounters* MetaspaceCounters::_metaspace_counters = NULL;
31 31
32 size_t MetaspaceCounters::calc_total_capacity() {
33 // The total capacity is the sum of
34 // 1) capacity of Metachunks in use by all Metaspaces
35 // 2) unused space at the end of each Metachunk
36 // 3) space in the freelist
37 size_t total_capacity = MetaspaceAux::allocated_capacity_bytes()
38 + MetaspaceAux::free_bytes() + MetaspaceAux::free_chunks_total_in_bytes();
39 return total_capacity;
40 }
41
32 MetaspaceCounters::MetaspaceCounters() : 42 MetaspaceCounters::MetaspaceCounters() :
33 _capacity(NULL), 43 _capacity(NULL),
34 _used(NULL), 44 _used(NULL),
35 _max_capacity(NULL) { 45 _max_capacity(NULL) {
36 if (UsePerfData) { 46 if (UsePerfData) {
37 size_t min_capacity = MetaspaceAux::min_chunk_size(); 47 size_t min_capacity = MetaspaceAux::min_chunk_size();
38 size_t max_capacity = MetaspaceAux::reserved_in_bytes(); 48 size_t max_capacity = MetaspaceAux::reserved_in_bytes();
39 size_t curr_capacity = MetaspaceAux::capacity_in_bytes(); 49 size_t curr_capacity = calc_total_capacity();
40 size_t used = MetaspaceAux::used_in_bytes(); 50 size_t used = MetaspaceAux::allocated_used_bytes();
41 51
42 initialize(min_capacity, max_capacity, curr_capacity, used); 52 initialize(min_capacity, max_capacity, curr_capacity, used);
43 } 53 }
44 } 54 }
45 55
80 } 90 }
81 } 91 }
82 92
83 void MetaspaceCounters::update_capacity() { 93 void MetaspaceCounters::update_capacity() {
84 assert(UsePerfData, "Should not be called unless being used"); 94 assert(UsePerfData, "Should not be called unless being used");
85 assert(_capacity != NULL, "Should be initialized"); 95 size_t total_capacity = calc_total_capacity();
86 size_t capacity_in_bytes = MetaspaceAux::capacity_in_bytes(); 96 _capacity->set_value(total_capacity);
87 _capacity->set_value(capacity_in_bytes);
88 } 97 }
89 98
90 void MetaspaceCounters::update_used() { 99 void MetaspaceCounters::update_used() {
91 assert(UsePerfData, "Should not be called unless being used"); 100 assert(UsePerfData, "Should not be called unless being used");
92 assert(_used != NULL, "Should be initialized"); 101 size_t used_in_bytes = MetaspaceAux::allocated_used_bytes();
93 size_t used_in_bytes = MetaspaceAux::used_in_bytes();
94 _used->set_value(used_in_bytes); 102 _used->set_value(used_in_bytes);
95 } 103 }
96 104
97 void MetaspaceCounters::update_max_capacity() { 105 void MetaspaceCounters::update_max_capacity() {
98 assert(UsePerfData, "Should not be called unless being used"); 106 assert(UsePerfData, "Should not be called unless being used");